212020085647 has 2 divisors, whose sum is σ = 212020085648. Its totient is φ = 212020085646.

The previous prime is 212020085621. The next prime is 212020085657. The reversal of 212020085647 is 746580020212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212020085647 - 2¹¹ = 212020083599 is a prime.

It is a super-3 number, since 3×212020085647³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020085657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010042823 + 106010042824.

It is an arithmetic number, because the mean of its divisors is an integer number (106010042824).

Almost surely, 2^212020085647 is an apocalyptic number.

212020085647 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020085647 is an equidigital number, since it uses as much as digits as its factorization.

212020085647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 212020085647 in words is "two hundred twelve billion, twenty million, eighty-five thousand, six hundred forty-seven".